LOW VOLTAGE APPARATUS ›› 2023, Vol. 0 ›› Issue (2): 74-80.doi: 10.16628/j.cnki.2095-8188.2023.02.014

• Power Quality • Previous Articles    

Research on Three-Phase Unbalance Treatment in Low Voltage Substation Using Phase-Change Switch

WANG Bo, LI Hongtao, HAO Liang, WANG Cunping, LI Zijin   

  1. State Grid Beijing Electric Power Research Institute, Beijing 100075, China
  • Received:2022-11-20 Online:2023-02-28 Published:2023-03-21

Abstract:

Based on the research of the effectiveness of phase-change switch in the treatment of three-phase imbalance in low voltage substation area,the new method is proposed to determine the installation location and priority of phase-change switches by analyzing the electrical parameters and other data of three-phase imbalance nodes.Through the practical application of phase-change switch in the project,the three-phase unbalance problem can be relieved.Through the simulation analysis of the typical substation area where the phase-change switch is applied,the line loss rate can be decreased.

Key words: three-phase unbalance, phase-change switch, line loss rate, zero sequence loss

CLC Number: